300MW Kilmarnock BESS Project
Contributing to the UK’s transition toward a more resilient, low-carbon energy network.

Client / Partners:
Omexom UK
Zenobē
Wärtsilä Energy
Sector:
Power Transmission & Storage
Battery Energy Storage Systems (BESS)
Capability:
Substations
LV Panels
Control & Monitoring Units
Grid-Scale Energy Storage
The Challenge
Large-scale BESS projects require tightly coordinated delivery of complex electrical infrastructure, often across challenging programmes and demanding site conditions. At Kilmarnock, the project involved the integration of multiple workstreams, including MVPS deliveries, control systems, switchgear, and LV infrastructure — all needing to align with commissioning milestones and strict performance standards.
B&S Group Solution
B&S Group was appointed to supply substations, LV panels, and Control & Monitoring Units (CMUs) to support the operational requirements of the BESS facility.
The scope of works included:
· Supply of substations supporting grid-scale battery storage
· Delivery of LV panels and CMUs
· Integration with wider site infrastructure alongside MVPS units supplied by Wärtsilä Energy
· Coordination with project partners to support commissioning timelines
In addition, B&S Group delivered control, switchgear, and LV rooms, ensuring consistency, quality, and readiness for subsequent commissioning phases.
Outcome
Following four months of intensive equipment deliveries, the final MVPS units arrived on site, marking a major milestone in the project programme. With cold commissioning well underway and hot commissioning scheduled to commence in May, the site continues to progress in line with high delivery standards.
This project reinforces B&S Group’s ongoing partnership with Omexom UK and Zenobē, supporting the deployment of grid-scale battery storage that enhances energy security and network flexibility.
Why Choose B&S Group
We work as a trusted engineering partner, delivering power infrastructure that supports the UK’s transition to a resilient, low-carbon energy future.
Over 30 years of engineering expertise
In-house fabrication and integrated delivery
Proven experience in regulated and safety-critical environments
A focus on quality, compliance, and long-term performance
Project Overview
B&S Group is proud to support the 300MW Kilmarnock Battery Energy Storage System (BESS) project — a major grid-scale development contributing to the UK’s transition toward a more resilient, low-carbon energy network.
Working in partnership with Omexom UK and supporting Zenobē’s BESS portfolio, B&S Group supplied critical substation and auxiliary infrastructure as part of a wider programme delivering three battery storage facilities across the UK.





